在客户端程序运行子系统时，执行一个MQL4程序发生了异外情况，其错误代码将被保存下来。对于每一个MQL4程序执行，存在一个特殊的last_error变量。在init()函数运行之前，last_error变量必须重置为零。如果在计算阶段或调用内置函数时发生错误，last_error变量会收到相应的错误代码。存储在这个变量中的值可以用GetLastError()函数访问，之后，last_error变量将重置为零。
这里罗列了直接导致程序立即停止运行的关键错误:
| 常数 | 值 | 描述 |
|---|---|---|
| ERR_WRONG_FUNCTION_POINTER | 4001 | 在调用内部函数时，发现错误的函数指针 |
| ERR_NO_MEMORY_FOR_CALL_STACK | 4003 | 在调用内部函数时，不能为函数调用堆栈再分配内存 |
| ERR_RECURSIVE_STACK_OVERFLOW | 4004 | 递归调用函数时，数据堆栈溢出 |
| ERR_NO_MEMORY_FOR_PARAM_STRING | 4006 | 在调用内部函数时，不能为作为函数参数的字符串分配内存 |
| ERR_NO_MEMORY_FOR_TEMP_STRING | 4007 | 不能为字符串操作分配临时缓冲区 |
| ERR_NO_MEMORY_FOR_ARRAYSTRING | 4010 | 赋值时，不能为数组中字符串重新分配内存 |
| ERR_TOO_LONG_STRING | 4011 | 赋值时，太长的字符串被送到服务缓冲区(不能再为服务缓冲区分配内存) |
| ERR_REMAINDER_FROM_ZERO_DIVIDE | 4012 | 余数除0错误 |
| ERR_ZERO_DIVIDE | 4013 | 除0 错误 |
| ERR_UNKNOWN_COMMAND | 4014 | 无效指令 |
如果在产生致命错误时程序停止了工作，这些错误代码可能被下次启动的程序用GetLastError()函数读取，也可被非初始化函数读取。在程序或非初始化函数开始运行之前，last_error变量不会归零。
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这里罗列了调用导入函数时发生的致命错误，这些错误会引起智能交易或自定义指标立即停止启动函数的执行，直到用户重新初始化为止。
| 常数 | 值 | 描述 |
|---|---|---|
| ERR_CANNOT_LOAD_LIBRARY | 4018 | 调用导入函数时，载入DLL或EX4库发生错误 |
| ERR_CANNOT_CALL_FUNCTION | 4019 | 调用导入函数时，发现DLL或EX4库不包含被调用函数 |
| ERR_DLL_CALLS_NOT_ALLOWED | 4017 | 调用导入DLL函数时，发现禁止DLL导入 |
| ERR_EXTERNAL_CALLS_NOT_ALLOWED | 4020 | 调用导入EX4函数时，发现禁止导入外部EX4 |
其他错误不中断程序执行。
| 常数 | 值 | 描述 |
|---|---|---|
| ERR_ARRAY_INDEX_OUT_OF_RANGE | 4002 | 超界访问数组 |
| ERR_NOT_INITIALIZED_STRING | 4008 | 未初始化字符串；没有值赋给在表达式中充当操作数的字符串 |
| ERR_NOT_INITIALIZED_ARRAYSTRING | 4009 | 未初始化字符串数组；没有值赋给在表达式中充当操作数的字符串 |
| ERR_NO_MEMORY_FOR_RETURNED_STR | 4021 | 不能为函数返回的字符串重新分配内存 |
从不产生ERR_NO_MQLERROR (4000)代码。
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这里罗列了可能只是由于软件或硬件故障而产生的许多错误。如果下列描述的错误反复出现，应与开发商联络。
| 常数 | 值 | 描述 |
|---|---|---|
| ERR_WRONG_FUNCTION_POINTER | 4001 | 在调用内部函数时，发现错误的函数指针 |
| ERR_UNKNOWN_COMMAND | 4014 | 无效指令 |
| ERR_NOT_INITIALIZED_ARRAY | 4016 | 未初始化数组 |
| ERR_INVALID_FUNCTION_PARAMSCNT | 4050 | 函数参数个数不正确 |
| ERR_STRING_FUNCTION_INTERNAL | 4052 | 字符串函数内部出错 |
| ERR_TRADE_ERROR | 4067 | 交易函数执行出错 |
| ERR_SOME_OBJECT_ERROR | 4207 | 对象函数出错 |
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下面这些函数会经常的修改last_error变量的值（即使没有发生错误也可能会修改last_error变量的值）。
| 函数 | 错误代码 |
|---|---|
| AccountFreeMarginCheck | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_UNKNOWN_SYMBOL (4106), ERR_NOT_ENOUGH_MONEY (134) |
| OrderSend | ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_PRICE_PARAM (4107), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), ERR_LONGS_NOT_ALLOWED (4110), ERR_SHORTS_NOT_ALLOWED (4111), 交易服务器返回的错误代码 |
| OrderClose | ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_PRICE_PARAM (4107), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| OrderCloseBy | ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| OrderDelete | ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| OrderModify | ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_PRICE_PARAM (4107), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| GetLastError | ERR_NO_ERROR (0) |
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下面这些函数只有发生错误的时候才会修改last_error变量值。
| 函数 | 错误代码 |
|---|---|
| ArrayBsearch | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayCopy | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCOMPATIBLE_ARRAYS (4056), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayCopyRates | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCOMPATIBLE_ARRAYS (4056), ERR_STRING_PARAMETER_EXPECTED (4062), |
| ArrayCopySeries | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCORRECT_SERIESARRAY_USING (4054), ERR_INCOMPATIBLE_ARRAYS (4056), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_HISTORY_WILL_UPDATED (4066), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayDimension | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArrayGetAsSeries | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArrayInitialize | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayIsSeries | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArrayMaximum | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayMinimum | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayRange | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayResize | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArraySetAsSeries | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArraySize | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArraySort | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCORRECT_SERIESARRAY_USING (4054), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileClose | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileDelete | ERR_WRONG_FILE_NAME (4101), ERR_SOME_FILE_ERROR (4100) |
| FileFlush | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileIsEnding | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileIsLineEnding | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileOpen | ERR_TOO_MANY_OPENED_FILES (4102), ERR_WRONG_FILE_NAME (4101), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_SOME_FILE_ERROR (4100), ERR_CANNOT_OPEN_FILE (4103) |
| FileOpenHistory | ERR_TOO_MANY_OPENED_FILES (4102), ERR_WRONG_FILE_NAME (4101), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_SOME_FILE_ERROR (4100), ERR_CANNOT_OPEN_FILE (4103) |
| FileReadArray | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_ARRAY_ERROR (4053), ERR_SOME_FILE_ERROR (4100), ERR_END_OF_FILE (4099) |
| FileReadDouble | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_END_OF_FILE (4099) |
| FileReadInteger | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_END_OF_FILE (4099) |
| FileReadNumber | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), ERR_END_OF_FILE (4099) |
| FileReadString | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), ERR_TOO_LONG_STRING (4011), ERR_END_OF_FILE (4099) |
| FileSeek | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileSize | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileTell | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileWrite | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_SOME_FILE_ERROR (4100) |
| FileWriteDouble | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100) |
| FileWriteInteger | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100) |
| FileWriteString | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), ERR_STRING_PARAMETER_EXPECTED (4062) |
| FileWriteArray | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), |
| GlobalVariableCheck | ERR_STRING_PARAMETER_EXPECTED (4062) |
| GlobalVariableDel | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLES_PROCESSING (4057) |
| GlobalVariableGet | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLE_NOT_FOUND (4058) |
| GlobalVariablesDeleteAll | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLES_PROCESSING (4057) |
| GlobalVariableSet | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLES_PROCESSING (4057), ERR_GLOBAL_VARIABLE_NOT_FOUND (4058) |
| GlobalVariableSetOnCondition | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLE_NOT_FOUND (4058) |
| iCustom | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| technical indicators, series access functions | ERR_HISTORY_WILL_UPDATED (4066) |
| technical indicators OnArray | ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| IndicatorBuffers | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| IndicatorDigits | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| IndicatorShortName | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MarketInfo | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_UNKNOWN_SYMBOL (4106), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MathArccos | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MathArcsin | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MathMod | ERR_ZERO_DIVIDE (4013) |
| MathSqrt | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MessageBox | ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_STRING_PARAMETER_EXPECTED (4062) |
| ObjectCreate | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_UNKNOWN_OBJECT_TYPE (4203), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_OBJECT_ALREADY_EXISTS (4200), ERR_NO_SPECIFIED_SUBWINDOW (4206) |
| ObjectDelete | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectDescription | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectFind | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204) |
| ObjectGet | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectGetFiboDescription | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_TYPE (4203), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectGetShiftByValue | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_OBJECT_COORDINATES_ERROR (4205) |
| ObjectGetValueByShift | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_OBJECT_COORDINATES_ERROR (4205) |
| ObjectMove | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectName | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_ARRAY_INDEX_OUT_OF_RANGE (4002) |
| ObjectSet | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectSetText | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectSetFiboDescription | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_TYPE (4203), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectType | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| OrderClosePrice | ERR_NO_ORDER_SELECTED (4105) |
| OrderCloseTime | ERR_NO_ORDER_SELECTED (4105) |
| OrderComment | ERR_NO_ORDER_SELECTED (4105) |
| OrderCommission | ERR_NO_ORDER_SELECTED (4105) |
| OrderExpiration | ERR_NO_ORDER_SELECTED (4105) |
| OrderLots | ERR_NO_ORDER_SELECTED (4105) |
| OrderMagicNumber | ERR_NO_ORDER_SELECTED (4105) |
| OrderOpenPrice | ERR_NO_ORDER_SELECTED (4105) |
| OrderOpenTime | ERR_NO_ORDER_SELECTED (4105) |
| OrderPrint | ERR_NO_ORDER_SELECTED (4105) |
| OrderProfit | ERR_NO_ORDER_SELECTED (4105) |
| OrderStopLoss | ERR_NO_ORDER_SELECTED (4105) |
| OrderSwap | ERR_NO_ORDER_SELECTED (4105) |
| OrderSymbol | ERR_NO_ORDER_SELECTED (4105) |
| OrderTakeProfit | ERR_NO_ORDER_SELECTED (4105) |
| OrderTicket | ERR_NO_ORDER_SELECTED (4105) |
| OrderType | ERR_NO_ORDER_SELECTED (4105) |
| PlaySound | ERR_WRONG_FILE_NAME (4101) |
| SendFTP | ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_STRING_PARAMETER_EXPECTED (4062) |
| SendMail | ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_FUNCTION_NOT_CONFIRMED (4060), ERR_SEND_MAIL_ERROR (4061) |
| SetIndexArrow | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexBuffer | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCORRECT_SERIESARRAY_USING (4054), ERR_INCOMPATIBLE_ARRAYS (4056) |
| SetIndexDrawBegin | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexEmptyValue | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexLabel | ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_STRING_PARAMETER_EXPECTED (4062) |
| SetIndexShift | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexStyle | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetLevelValue | ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| Sleep | ERR_CUSTOM_INDICATOR_ERROR (4055) |
| StringFind | ERR_STRING_PARAMETER_EXPECTED (4062) |
| StringGetChar | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NOT_INITIALIZED_STRING (4008), ERR_ARRAY_INDEX_OUT_OF_RANGE (4002) |
| StringLen | ERR_STRING_PARAMETER_EXPECTED (4062) |
| StringSetChar | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_NOT_INITIALIZED_STRING (4008), ERR_TOO_LONG_STRING (4011), ERR_ARRAY_INDEX_OUT_OF_RANGE (4002) |
| StringSubstr | ERR_STRING_PARAMETER_EXPECTED (4062), ERR_TOO_LONG_STRING (4011) |
| StringTrimLeft | ERR_STRING_PARAMETER_EXPECTED (4062) |
| StringTrimRight | ERR_STRING_PARAMETER_EXPECTED (4062) |
| WindowIsVisible | ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059) |
| WindowFind | ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NOT_INITIALIZED_STRING (4008) |
| WindowHandle | ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NOT_INITIALIZED_STRING (4008) |
| WindowScreenShot | ERR_WRONG_FILE_NAME (4101), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
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下面的函数从不改变last_error变量值。
AccountBalance, AccountCompany, AccountCredit, AccountCurrency, AccountEquity, AccountFreeMargin, AccountLeverage, AccountMargin, AccountName, AccountNumber, AccountProfit, AccountServer, Alert, CharToStr, Comment, Day, DayOfWeek, DayOfYear, DoubleToStr, GetTickCount, HideTestIndicators, Hour, IndicatorCounted, IsConnected, IsDemo, IsDllsAllowed, IsExpertEnabled, IsLibrariesAllowed, IsOptimization, IsStopped, IsTesting, IsTradeAllowed, IsTradeContextBusy, IsVisualMode, MathAbs, MathArctan, MathCeil, MathCos, MathExp, MathFloor, MathLog, MathMax, MathMin, MathPow, MathRand, MathRound, MathSin, MathSrand, MathTan, Minute, Month, NormalizeDouble, ObjectsDeleteAll, ObjectsTotal, OrderSelect, OrdersHistoryTotal, Period, Print, RefreshRates, Seconds, SetLevelStyle, StringConcatenate, StrToTime, StrToDouble, Symbol, TerminalCompany, TerminalName, TerminalPath, TimeCurrent, TimeDay, TimeDayOfWeek, TimeDayOfYear, TimeHour, TimeLocal, TimeMinute, TimeMonth, TimeSeconds, TimeToStr, TimeYear, UninitializeReason, WindowBarsPerChart, WindowFirstVisibleBar, WindowPriceOnDropped, WindowRedraw, WindowTimeOnDropped, WindowsTotal, WindowOnDropped, WindowXOnDropped, WindowYOnDropped, Year
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